where \(E(k)\)  is the kinetic energy spectrum as a function of wavenumber, \(k\) , \(\epsilon \)  is the turbulent spectral KE flux, which in turn is equal to the dissipation rate, and \(\mathcal {K} \approx 1.5\)  is the Kolmogorov constant [1]}. Integrating over the energy inertial range yields
\(E_t\approx 2 k_0^{-2/3} \epsilon ^{2/3}\) 
